Sometimes it happen that people that I’ve brought on the “Linux side” of the operating systems ask me, “Which antivirus should i use ?” or “should i defrag my disk ?”
This is one of the most complete answer I’ve found to the second question, source Ubuntu Forum
I’d actually strongly suggest not defraging … the reason behind this? Even on windows most defraggers have 2 options, 1 Defragment, 2 Compact … sometimes called something different, but the end result’s the same.
The “defragment” is supposed to make all files into contiguous blocks. The “compact” is supposed to defragment and make the free space into a contiguous block. Now while this sounds nice, the reality is quite different: